Author: br Date: Tue Dec 20 18:27:53 2016 New Revision: 310333 URL: https://svnweb.freebsd.org/changeset/base/310333
Log: Add jz4780 AIC (Audio Interface Controller) driver. Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D8808 Added: head/sys/mips/ingenic/jz4780_aic.c (contents, props changed) Modified: head/sys/mips/conf/CANNA head/sys/mips/conf/CI20 head/sys/mips/ingenic/files.jz4780 head/sys/mips/ingenic/files.x1000 Modified: head/sys/mips/conf/CANNA ============================================================================== --- head/sys/mips/conf/CANNA Tue Dec 20 18:25:41 2016 (r310332) +++ head/sys/mips/conf/CANNA Tue Dec 20 18:27:53 2016 (r310333) @@ -26,5 +26,8 @@ options ROOTDEVNAME=\"ufs:mmcsd0s3\" makeoptions TRAMPLOADADDR=0x88000000 +device sound +device xdma + #options VERBOSE_SYSINIT options PRINTF_BUFR_SIZE=256 Modified: head/sys/mips/conf/CI20 ============================================================================== --- head/sys/mips/conf/CI20 Tue Dec 20 18:25:41 2016 (r310332) +++ head/sys/mips/conf/CI20 Tue Dec 20 18:27:53 2016 (r310333) @@ -25,6 +25,9 @@ makeoptions FDT_DTS_FILE=ingenic/ci20.dt options ROOTDEVNAME=\"ufs:mmcsd0\" +device sound +device xdma + makeoptions TRAMPLOADADDR=0x88000000 #options VERBOSE_SYSINIT Modified: head/sys/mips/ingenic/files.jz4780 ============================================================================== --- head/sys/mips/ingenic/files.jz4780 Tue Dec 20 18:25:41 2016 (r310332) +++ head/sys/mips/ingenic/files.jz4780 Tue Dec 20 18:27:53 2016 (r310333) @@ -23,6 +23,10 @@ mips/ingenic/jz4780_pdma.c standard mips/ingenic/jz4780_pinctrl.c standard mips/ingenic/jz4780_timer.c standard +# Sound +mips/ingenic/jz4780_aic.c optional sound xdma +mips/ingenic/jz4780_codec.c optional sound + # SMP mips/ingenic/jz4780_mp.c optional smp mips/ingenic/jz4780_mpboot.S optional smp Modified: head/sys/mips/ingenic/files.x1000 ============================================================================== --- head/sys/mips/ingenic/files.x1000 Tue Dec 20 18:25:41 2016 (r310332) +++ head/sys/mips/ingenic/files.x1000 Tue Dec 20 18:27:53 2016 (r310333) @@ -14,5 +14,9 @@ mips/ingenic/jz4780_pdma.c standard mips/ingenic/jz4780_pinctrl.c standard mips/ingenic/jz4780_timer.c standard +# Sound +mips/ingenic/jz4780_aic.c optional sound xdma +mips/ingenic/jz4780_codec.c optional sound + # Custom interface between pinctrl and gpio mips/ingenic/jz4780_gpio_if.m standard Added: head/sys/mips/ingenic/jz4780_aic.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/mips/ingenic/jz4780_aic.c Tue Dec 20 18:27:53 2016 (r310333) @@ -0,0 +1,754 @@ +/*- + * Copyright (c) 2016 Ruslan Bukin <b...@bsdpad.com> + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* Ingenic JZ4780 Audio Interface Controller (AIC). */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/conf.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/lock.h> +#include <sys/mutex.h> +#include <sys/resource.h> +#include <sys/rman.h> + +#include <machine/bus.h> + +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <dev/sound/pcm/sound.h> +#include <dev/sound/chip.h> +#include <mixer_if.h> + +#include <dev/extres/clk/clk.h> +#include <dev/xdma/xdma.h> + +#include <mips/ingenic/jz4780_common.h> +#include <mips/ingenic/jz4780_aic.h> + +#define AIC_NCHANNELS 1 + +struct aic_softc { + device_t dev; + struct resource *res[1]; + bus_space_tag_t bst; + bus_space_handle_t bsh; + struct mtx *lock; + int pos; + bus_dma_tag_t dma_tag; + bus_dmamap_t dma_map; + bus_addr_t buf_base_phys; + uint32_t *buf_base; + uintptr_t aic_fifo_paddr; + int dma_size; + clk_t clk_aic; + clk_t clk_i2s; + struct aic_rate *sr; + void *ih; + struct xdma_channel *xchan; + xdma_controller_t *xdma_tx; +}; + +/* Channel registers */ +struct sc_chinfo { + struct snd_dbuf *buffer; + struct pcm_channel *channel; + struct sc_pcminfo *parent; + + /* Channel information */ + uint32_t dir; + uint32_t format; + + /* Flags */ + uint32_t run; +}; + +/* PCM device private data */ +struct sc_pcminfo { + device_t dev; + uint32_t chnum; + struct sc_chinfo chan[AIC_NCHANNELS]; + struct aic_softc *sc; +}; + +static struct resource_spec aic_spec[] = { + { SYS_RES_MEMORY, 0, RF_ACTIVE }, + { -1, 0 } +}; + +static int aic_probe(device_t dev); +static int aic_attach(device_t dev); +static int aic_detach(device_t dev); +static int setup_xdma(struct sc_pcminfo *scp); + +struct aic_rate { + uint32_t speed; +}; + +static struct aic_rate rate_map[] = { + { 96000 }, + /* TODO: add more frequences */ + { 0 }, +}; + +/* + * Mixer interface. + */ +static int +aicmixer_init(struct snd_mixer *m) +{ + struct sc_pcminfo *scp; + struct aic_softc *sc; + int mask; + + scp = mix_getdevinfo(m); + sc = scp->sc; + + if (sc == NULL) + return -1; + + mask = SOUND_MASK_PCM; + + snd_mtxlock(sc->lock); + pcm_setflags(scp->dev, pcm_getflags(scp->dev) | SD_F_SOFTPCMVOL); + mix_setdevs(m, mask); + snd_mtxunlock(sc->lock); + + return (0); +} + +static int +aicmixer_set(struct snd_mixer *m, unsigned dev, + unsigned left, unsigned right) +{ + struct sc_pcminfo *scp; + + scp = mix_getdevinfo(m); + + /* Here we can configure hardware volume on our DAC */ + + return (0); +} + +static kobj_method_t aicmixer_methods[] = { + KOBJMETHOD(mixer_init, aicmixer_init), + KOBJMETHOD(mixer_set, aicmixer_set), + KOBJMETHOD_END +}; +MIXER_DECLARE(aicmixer); + +/* + * Channel interface. + */ +static void * +aicchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, + struct pcm_channel *c, int dir) +{ + struct sc_pcminfo *scp; + struct sc_chinfo *ch; + struct aic_softc *sc; + + scp = (struct sc_pcminfo *)devinfo; + sc = scp->sc; + + snd_mtxlock(sc->lock); + ch = &scp->chan[0]; + ch->dir = dir; + ch->run = 0; + ch->buffer = b; + ch->channel = c; + ch->parent = scp; + snd_mtxunlock(sc->lock); + + if (sndbuf_setup(ch->buffer, sc->buf_base, sc->dma_size) != 0) { + device_printf(scp->dev, "Can't setup sndbuf.\n"); + return NULL; + } + + return (ch); +} + +static int +aicchan_free(kobj_t obj, void *data) +{ + struct sc_chinfo *ch = data; + struct sc_pcminfo *scp = ch->parent; + struct aic_softc *sc = scp->sc; + + snd_mtxlock(sc->lock); + /* TODO: free channel buffer */ + snd_mtxunlock(sc->lock); + + return (0); +} + +static int +aicchan_setformat(kobj_t obj, void *data, uint32_t format) +{ + struct sc_pcminfo *scp; + struct sc_chinfo *ch; + + ch = data; + scp = ch->parent; + + ch->format = format; + + return (0); +} + +static uint32_t +aicchan_setspeed(kobj_t obj, void *data, uint32_t speed) +{ + struct sc_pcminfo *scp; + struct sc_chinfo *ch; + struct aic_rate *sr; + struct aic_softc *sc; + int threshold; + int i; + + ch = data; + scp = ch->parent; + sc = scp->sc; + + sr = NULL; + + /* First look for equal frequency. */ + for (i = 0; rate_map[i].speed != 0; i++) { + if (rate_map[i].speed == speed) + sr = &rate_map[i]; + } + + /* If no match, just find nearest. */ + if (sr == NULL) { + for (i = 0; rate_map[i].speed != 0; i++) { + sr = &rate_map[i]; + threshold = sr->speed + ((rate_map[i + 1].speed != 0) ? + ((rate_map[i + 1].speed - sr->speed) >> 1) : 0); + if (speed < threshold) + break; + } + } + + sc->sr = sr; + + /* Clocks can be reconfigured here. */ + + return (sr->speed); +} + +static uint32_t +aicchan_setblocksize(kobj_t obj, void *data, uint32_t blocksize) +{ + struct sc_pcminfo *scp; + struct sc_chinfo *ch; + struct aic_softc *sc; + + ch = data; + scp = ch->parent; + sc = scp->sc; + + sndbuf_resize(ch->buffer, sc->dma_size / blocksize, blocksize); + + return (sndbuf_getblksz(ch->buffer)); +} + +static int +aic_intr(void *arg) +{ + struct sc_pcminfo *scp; + xdma_channel_t *xchan; + struct sc_chinfo *ch; + struct aic_softc *sc; + xdma_config_t *conf; + int bufsize; + + scp = arg; + sc = scp->sc; + ch = &scp->chan[0]; + + xchan = sc->xchan; + conf = &xchan->conf; + + bufsize = sndbuf_getsize(ch->buffer); + + sc->pos += conf->block_len; + if (sc->pos >= bufsize) + sc->pos -= bufsize; + + if (ch->run) + chn_intr(ch->channel); + + return (0); +} + +static int +setup_xdma(struct sc_pcminfo *scp) +{ + struct aic_softc *sc; + struct sc_chinfo *ch; + int fmt; + int err; + + ch = &scp->chan[0]; + sc = scp->sc; + + fmt = sndbuf_getfmt(ch->buffer); + + KASSERT(fmt & AFMT_16BIT, ("16-bit audio supported only.")); + + err = xdma_prep_cyclic(sc->xchan, + XDMA_MEM_TO_DEV, /* direction */ + sc->buf_base_phys, /* src addr */ + sc->aic_fifo_paddr, /* dst addr */ + sndbuf_getblksz(ch->buffer), /* block len */ + sndbuf_getblkcnt(ch->buffer), /* block num */ + 2, /* src port width */ + 2); /* dst port width */ + if (err != 0) { + device_printf(sc->dev, "Can't configure virtual channel\n"); + return (-1); + } + + xdma_begin(sc->xchan); + + return (0); +} + +static int +aic_start(struct sc_pcminfo *scp) +{ + struct aic_softc *sc; + int reg; + + sc = scp->sc; + sc->pos = 0; + + /* Ensure clock enabled. */ + reg = READ4(sc, I2SCR); + reg |= (I2SCR_ESCLK); + WRITE4(sc, I2SCR, reg); + + setup_xdma(scp); + + reg = (AICCR_OSS_16 | AICCR_ISS_16); + reg |= (AICCR_CHANNEL_2); + reg |= (AICCR_TDMS); + reg |= (AICCR_ERPL); + WRITE4(sc, AICCR, reg); + + return (0); +} + +static int +aic_stop(struct sc_pcminfo *scp) +{ + struct aic_softc *sc; + int reg; + + sc = scp->sc; + + reg = READ4(sc, AICCR); + reg &= ~(AICCR_TDMS | AICCR_ERPL); + WRITE4(sc, AICCR, reg); + + xdma_terminate(sc->xchan); + + sc->pos = 0; + + bzero(sc->buf_base, sc->dma_size); + + return (0); +} + +static int +aicchan_trigger(kobj_t obj, void *data, int go) +{ + struct sc_pcminfo *scp; + struct sc_chinfo *ch; + struct aic_softc *sc; + + ch = data; + scp = ch->parent; + sc = scp->sc; + + snd_mtxlock(sc->lock); + + switch (go) { + case PCMTRIG_START: + ch->run = 1; + + aic_start(scp); + + break; + + case PCMTRIG_STOP: + case PCMTRIG_ABORT: + ch->run = 0; + + aic_stop(scp); + + break; + } + + snd_mtxunlock(sc->lock); + + return (0); +} + +static uint32_t +aicchan_getptr(kobj_t obj, void *data) +{ + struct sc_pcminfo *scp; + struct sc_chinfo *ch; + struct aic_softc *sc; + + ch = data; + scp = ch->parent; + sc = scp->sc; + + return (sc->pos); +} + +static uint32_t aic_pfmt[] = { + SND_FORMAT(AFMT_S16_LE, 2, 0), + 0 +}; + +static struct pcmchan_caps aic_pcaps = {96000, 96000, aic_pfmt, 0}; + +static struct pcmchan_caps * +aicchan_getcaps(kobj_t obj, void *data) +{ + + return (&aic_pcaps); +} + +static kobj_method_t aicchan_methods[] = { + KOBJMETHOD(channel_init, aicchan_init), + KOBJMETHOD(channel_free, aicchan_free), + KOBJMETHOD(channel_setformat, aicchan_setformat), + KOBJMETHOD(channel_setspeed, aicchan_setspeed), + KOBJMETHOD(channel_setblocksize, aicchan_setblocksize), + KOBJMETHOD(channel_trigger, aicchan_trigger), + KOBJMETHOD(channel_getptr, aicchan_getptr), + KOBJMETHOD(channel_getcaps, aicchan_getcaps), + KOBJMETHOD_END +}; +CHANNEL_DECLARE(aicchan); + +static void +aic_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err) +{ + bus_addr_t *addr; + + if (err) + return; + + addr = (bus_addr_t*)arg; + *addr = segs[0].ds_addr; +} + +static int +aic_dma_setup(struct aic_softc *sc) +{ + device_t dev; + int err; + + dev = sc->dev; + + /* DMA buffer size. */ + sc->dma_size = 131072; + + /* + * Must use dma_size boundary as modulo feature required. + * Modulo feature allows setup circular buffer. + */ + err = bus_dma_tag_create( + bus_get_dma_tag(sc->dev), + 4, sc->dma_size, /* alignment, boundary */ + BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + sc->dma_size, 1, /* maxsize, nsegments */ + sc->dma_size, 0, /* maxsegsize, flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->dma_tag); + if (err) { + device_printf(dev, "cannot create bus dma tag\n"); + return (-1); + } + + err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->buf_base, + BUS_DMA_WAITOK | BUS_DMA_COHERENT, &sc->dma_map); + if (err) { + device_printf(dev, "cannot allocate memory\n"); + return (-1); + } + + err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->buf_base, + sc->dma_size, aic_dmamap_cb, &sc->buf_base_phys, BUS_DMA_WAITOK); + if (err) { + device_printf(dev, "cannot load DMA map\n"); + return (-1); + } + + bzero(sc->buf_base, sc->dma_size); + + return (0); +} + +static int +aic_configure_clocks(struct aic_softc *sc) +{ + uint64_t aic_freq; + uint64_t i2s_freq; + device_t dev; + int err; + + dev = sc->dev; + + err = clk_get_by_ofw_name(sc->dev, 0, "aic", &sc->clk_aic); + if (err != 0) { + device_printf(dev, "Can't find aic clock.\n"); + return (-1); + } + + err = clk_enable(sc->clk_aic); + if (err != 0) { + device_printf(dev, "Can't enable aic clock.\n"); + return (-1); + } + + err = clk_get_by_ofw_name(sc->dev, 0, "i2s", &sc->clk_i2s); + if (err != 0) { + device_printf(dev, "Can't find i2s clock.\n"); + return (-1); + } + + err = clk_enable(sc->clk_i2s); + if (err != 0) { + device_printf(dev, "Can't enable i2s clock.\n"); + return (-1); + } + + err = clk_set_freq(sc->clk_i2s, 12000000, 0); + if (err != 0) { + device_printf(dev, "Can't set i2s frequency.\n"); + return (-1); + } + + clk_get_freq(sc->clk_aic, &aic_freq); + clk_get_freq(sc->clk_i2s, &i2s_freq); + + device_printf(dev, "Frequency aic %d i2s %d\n", + (uint32_t)aic_freq, (uint32_t)i2s_freq); + + return (0); +} + +static int +aic_configure(struct aic_softc *sc) +{ + int internal_codec; + int reg; + + internal_codec = 1; + + WRITE4(sc, AICFR, AICFR_RST); + + /* Configure AIC */ + reg = 0; + if (internal_codec) { + reg |= (AICFR_ICDC); + } else { + reg |= (AICFR_SYNCD | AICFR_BCKD); + } + reg |= (AICFR_AUSEL); /* I2S/MSB-justified format. */ + reg |= (AICFR_TFTH(8)); /* Transmit FIFO threshold */ + reg |= (AICFR_RFTH(7)); /* Receive FIFO threshold */ + WRITE4(sc, AICFR, reg); + + reg = READ4(sc, AICFR); + reg |= (AICFR_ENB); /* Enable the controller. */ + WRITE4(sc, AICFR, reg); + + return (0); +} + +static int +aic_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (!ofw_bus_is_compatible(dev, "ingenic,jz4780-i2s")) + return (ENXIO); + + device_set_desc(dev, "Audio Interface Controller"); + + return (BUS_PROBE_DEFAULT); +} + +static int +aic_attach(device_t dev) +{ + char status[SND_STATUSLEN]; + struct sc_pcminfo *scp; + struct aic_softc *sc; + int err; + + sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO); + sc->dev = dev; + sc->pos = 0; + + /* Get xDMA controller */ + sc->xdma_tx = xdma_ofw_get(sc->dev, "tx"); + if (sc->xdma_tx == NULL) { + device_printf(dev, "Can't find DMA controller.\n"); + return (ENXIO); + } + + /* Alloc xDMA virtual channel. */ + sc->xchan = xdma_channel_alloc(sc->xdma_tx); + if (sc->xchan == NULL) { + device_printf(dev, "Can't alloc virtual DMA channel.\n"); + return (ENXIO); + } + + /* Setup sound subsystem */ + sc->lock = snd_mtxcreate(device_get_nameunit(dev), "aic softc"); + if (sc->lock == NULL) { + device_printf(dev, "Can't create mtx.\n"); + return (ENXIO); + } + + if (bus_alloc_resources(dev, aic_spec, sc->res)) { + device_printf(dev, + "could not allocate resources for device\n"); + return (ENXIO); + } + + /* Memory interface */ + sc->bst = rman_get_bustag(sc->res[0]); + sc->bsh = rman_get_bushandle(sc->res[0]); + sc->aic_fifo_paddr = rman_get_start(sc->res[0]) + AICDR; + + /* Setup PCM. */ + scp = malloc(sizeof(struct sc_pcminfo), M_DEVBUF, M_WAITOK | M_ZERO); + scp->sc = sc; + scp->dev = dev; + + /* Setup audio buffer. */ + err = aic_dma_setup(sc); + if (err != 0) { + device_printf(dev, "Can't setup sound buffer.\n"); + return (ENXIO); + } + + /* Setup clocks. */ + err = aic_configure_clocks(sc); + if (err != 0) { + device_printf(dev, "Can't configure clocks.\n"); + return (ENXIO); + } + + err = aic_configure(sc); + if (err != 0) { + device_printf(dev, "Can't configure AIC.\n"); + return (ENXIO); + } + + pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE); + + /* Setup interrupt handler. */ + err = xdma_setup_intr(sc->xchan, aic_intr, scp, &sc->ih); + if (err) { + device_printf(sc->dev, + "Can't setup xDMA interrupt handler.\n"); + return (ENXIO); + } + + err = pcm_register(dev, scp, 1, 0); + if (err) { + device_printf(dev, "Can't register pcm.\n"); + return (ENXIO); + } + + scp->chnum = 0; + pcm_addchan(dev, PCMDIR_PLAY, &aicchan_class, scp); + scp->chnum++; + + snprintf(status, SND_STATUSLEN, "at %s", ofw_bus_get_name(dev)); + pcm_setstatus(dev, status); + + mixer_init(dev, &aicmixer_class, scp); + + return (0); +} + +static int +aic_detach(device_t dev) +{ + struct aic_softc *sc; + + sc = device_get_softc(dev); + + xdma_channel_free(sc->xchan); + + bus_release_resources(dev, aic_spec, sc->res); + + return (0); +} + +static device_method_t aic_pcm_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, aic_probe), + DEVMETHOD(device_attach, aic_attach), + DEVMETHOD(device_detach, aic_detach), + DEVMETHOD_END +}; + +static driver_t aic_pcm_driver = { + "pcm", + aic_pcm_methods, + PCM_SOFTC_SIZE, +}; + +DRIVER_MODULE(aic, simplebus, aic_pcm_driver, pcm_devclass, 0, 0); +MODULE_DEPEND(aic, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER); +MODULE_VERSION(aic, 1); 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